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Single-shot phase and amplitude fluctuations of narrow-linewidth pulse bursts in divided pulse amplifier

Single-shot phase and amplitude fluctuations of narrow-linewidth pulse bursts in divided pulse amplifier
Single-shot phase and amplitude fluctuations of narrow-linewidth pulse bursts in divided pulse amplifier
We demonstrate single-shot temporal-based interferometric phase measurements for bursts of 35 pulses of 1-ns duration in an Yb-doped fiber amplifier chain seeded by a 1063-nm single-frequency diode laser and operating in a highly nonlinear and saturated regime. We determined a maximum intra-pulse phase distortion ( $B$ -integral) of 21.2 rad by mixing the burst with a reference. The difference in the B-integral between the first and last pulse in the burst was large, 12.8 rad, but can be compensated for. Moreover, burst-to-burst amplitude fluctuations (standard deviation, std) were below 6%, where phase fluctuations were ~0.6 rad (std) or less. Even if these fluctuations cannot be compensated for, they still allow for efficient coherent combination, which opens up for transform-limited or narrow-line high-energy divided-pulse amplification with single-frequency seeding.
1041-1135
1662-1665
Lin, Huaiqin
0e8f318a-0864-4c8f-803b-9fd9f13009f5
Feng, Yujun
25a28374-33d9-478f-9bd2-98f0d93231af
Price, Jonathan
fddcce17-291b-4d01-bd38-8fb0453abdc8
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Lin, Huaiqin
0e8f318a-0864-4c8f-803b-9fd9f13009f5
Feng, Yujun
25a28374-33d9-478f-9bd2-98f0d93231af
Price, Jonathan
fddcce17-291b-4d01-bd38-8fb0453abdc8
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Lin, Huaiqin, Feng, Yujun, Price, Jonathan and Nilsson, Johan (2019) Single-shot phase and amplitude fluctuations of narrow-linewidth pulse bursts in divided pulse amplifier. IEEE Photonics Technology Letters, 31 (20), 1662-1665. (doi:10.1109/LPT.2019.2942175).

Record type: Article

Abstract

We demonstrate single-shot temporal-based interferometric phase measurements for bursts of 35 pulses of 1-ns duration in an Yb-doped fiber amplifier chain seeded by a 1063-nm single-frequency diode laser and operating in a highly nonlinear and saturated regime. We determined a maximum intra-pulse phase distortion ( $B$ -integral) of 21.2 rad by mixing the burst with a reference. The difference in the B-integral between the first and last pulse in the burst was large, 12.8 rad, but can be compensated for. Moreover, burst-to-burst amplitude fluctuations (standard deviation, std) were below 6%, where phase fluctuations were ~0.6 rad (std) or less. Even if these fluctuations cannot be compensated for, they still allow for efficient coherent combination, which opens up for transform-limited or narrow-line high-energy divided-pulse amplification with single-frequency seeding.

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Accepted/In Press date: 15 September 2019
e-pub ahead of print date: 18 September 2019
Published date: October 2019

Identifiers

Local EPrints ID: 435096
URI: https://eprints.soton.ac.uk/id/eprint/435096
ISSN: 1041-1135
PURE UUID: e1de16c5-e8cd-4097-9657-ddc45fc958d3
ORCID for Huaiqin Lin: ORCID iD orcid.org/0000-0002-9805-4570
ORCID for Yujun Feng: ORCID iD orcid.org/0000-0001-7839-065X
ORCID for Jonathan Price: ORCID iD orcid.org/0000-0003-0256-9172
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

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Date deposited: 22 Oct 2019 16:30
Last modified: 05 Nov 2019 01:57

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